Rather than band pass filters, maybe try a good ‘ole low pass filter? Won’t work on two meters or maybe six meters, but I suspect most of the ambient RF is up in the VHF/UHF or above. And if it’s in-band interference, a band pass filter won’t help either.
Used for the opposite reason - protecting us rather than our neighbors - than for what those LPFs were originally made and purchased. 73 - Jim K8MR > On Jun 3, 2018, at 12:49 PM, Mike Parkes <[email protected]> wrote: > > Hey group > I have an issue here and am wondering if a good band pass filter would > help? I pick up so much sqawks and buzzing weird interference, grating > machine sounds, on my KX3 on all HF bands, it is horrible in my setting > (ground floor apartment in the city). I have the same issues on 2 meter > handhelds, noise all over the band, trips the squelch making it nigh > impossible to scan without the radio stopping on some ghost signal that is > only intermod. Same story with the KX3 2 mtr module though I can turn the > squelch up enough to keep the radio scanning without stopping on noise for > the most part. Is there any hope for HF? Would some sort of HF band pass > filter help my KX3? Or is the filtering in the KX3 already good enough? I > can't make it go away with the built in KX3 noise filters. There is this > one company across the street from me, some internet megalith place with > sat dishes on the roof and I wonder if some of the noise is coming from > that establishment. Anyway... thanks for any ideas... head for a park, a > mountain peak... I know... :) > > 73's Mike AB7RU DN17gp > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
